Once you have owned either Harbeth or Spendor, it becomes very hard to change brands. I hate to use the term- but they are musical. Heard many very linear boring speakers at the RMAF. Heard many people auditioning speakers with bird chirps and tap dancing. I really prefer music.
Have both the Harbeth 7es2 and the Spendor Sp100s. Have auditioned the Harbeth m30s many times.
The Harbeths will tend to bottom out under pressure while Spendors will hang in there. Have a slightly different sound, catering to slightly different tastes. The Harbeth has that recessed LS3/5a euphonic midrange while the Spendor is a little flatter.
Heard the M40s at the RMAF and they are superb. Definitely an upgrade over the SP100s in the bottom end and can also play loud.
AS I've stated the midrange is your preference area.
Have heard all the other speakers on your list and they are all a downgrade from what you have. Rel subs are a very good option also.
Have both the Harbeth 7es2 and the Spendor Sp100s. Have auditioned the Harbeth m30s many times.
The Harbeths will tend to bottom out under pressure while Spendors will hang in there. Have a slightly different sound, catering to slightly different tastes. The Harbeth has that recessed LS3/5a euphonic midrange while the Spendor is a little flatter.
Heard the M40s at the RMAF and they are superb. Definitely an upgrade over the SP100s in the bottom end and can also play loud.
AS I've stated the midrange is your preference area.
Have heard all the other speakers on your list and they are all a downgrade from what you have. Rel subs are a very good option also.